21-letter words containing a, n, u, l, r
- industrial revolution — (sometimes initial capital letters) the totality of the changes in economic and social organization that began about 1760 in England and later in other countries, characterized chiefly by the replacement of hand tools with power-driven machines, as the power loom and the steam engine, and by the concentration of industry in large establishments.
- infectious ectromelia — ectromelia (def 2).
- inflationary universe — a version of the big bang theory in which the universe underwent very rapid growth during the first fraction of a second before it settled down to its current rate of expansion.
- instrumental learning — a method of training in which the reinforcement is made contingent on the occurrence of the response
- insulin shock therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- intellectual property — Law. property that results from original creative thought, as patents, copyright material, and trademarks.
- internal jugular vein — Anatomy. a jugular vein.
- intersubstitutability — a person or thing acting or serving in place of another.
- irish republican army — an underground Irish nationalist organization founded to work for Irish independence from Great Britain: declared illegal by the Irish government in 1936, but continues activity aimed at the unification of the Republic of Ireland and Northern Ireland. Abbreviation: IRA, I.R.A.
- joseph bonaparte gulf — an inlet of the Timor Sea in N Australia. Width: 360 km (225 miles)
- jump all over someone — to spring clear of the ground or other support by a sudden muscular effort; leap: to jump into the air; to jump out a window.
- kekule von stradonitz — Friedrich August [free-drikh ou-goo st] /ˈfri drɪx ˈaʊ gʊst/ (Show IPA), 1829–96, German chemist.
- keto-enol tautomerism — tautomerism in which the tautomers are an enol and a keto form. The change occurs by transfer of a hydrogen atom within the molecule
- lafcadio's adventures — French Les Caves du Vatican. a novel (1914) by André Gide.
- language-based editor — language-sensitive editor
- lap and shoulder belt — a car seat belt
- launch control center — any of a number of underground U.S. command facilities prepared to launch land-based missiles in event of war.
- learning difficulties — difficulty experienced in reaching the average standard of people of the same age group as regards intellectual and cognitive skills and performance
- leave sb in the lurch — If someone leaves you in the lurch, they go away or stop helping you at a very difficult time.
- liquefied natural gas — a mixture of various gases, esp methane, liquefied under pressure for transportation and used as an engine fuel
- look to one's laurels — any tree of the genus Laurus.
- magnesium trisilicate — a white, fine, odorless and tasteless powder, Mg 2 O 8 Si 3 ⋅nH 2 O, used industrially to absorb odors and decolorize and pharmaceutically as an antacid.
- maple-leaved viburnum — dockmackie.
- mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
- mechanical metallurgy — the branch of metallurgy dealing with the response of metals to applied forces.
- medical jurisprudence — forensic medicine.
- medium access control — Media Access Control
- mengistu haile mariam — born 1937, Ethiopian political leader: head of state 1977–87; president 1987–91.
- multi-level marketing — Multi-level marketing is a marketing technique which involves people buying a product, then earning a commission by selling it to their friends. The abbreviation MLM is also used.
- multichannel analyser — an electronic instrument, such as a pulse height analyser, that splits an input waveform into a large number of channels in accordance with a particular parameter of the input
- multilayer perceptron — A network composed of more than one layer of neurons, with some or all of the outputs of each layer connected to one or more of the inputs of another layer. The first layer is called the input layer, the last one is the output layer, and in between there may be one or more hidden layers.
- multiplex transmitter — a transmitter that sends signals by multiplex
- multiplication factor — the ratio of the number of neutrons in a generation to the number of neutrons in the previous generation: when the multiplication factor is equal to or greater than one, a chain reaction is possible
- municipal corporation — a city, town, village, etc., that operates under a corporate charter granted by the state.
- narrow-angle glaucoma — Ophthalmology. angle-closure glaucoma. See under glaucoma.
- national public radio — a nationwide network of nonprofit radio stations supported in part by U.S. government funds distributed by the Corporation for Public Broadcasting, often affiliated with a public television station or educational institution. Abbreviation: NPR.
- naturalization papers — documents confirming that someone has been awarded citizenship of a country he or she was not born in
- negotiable instrument — order or promise to pay money
- negotiable securities — securities that are legally transferable in title from one party to another
- new general catalogue — NGC.
- new year's resolution — If you make a New Year's resolution, you make a decision at the beginning of a year to start doing something or to stop doing something.
- nitrosylsulfuric acid — a clear, straw-colored, oily, corrosive liquid, HNO 5 S, used chiefly in the manufacture of dyes.
- non-maintainer upload — (operating system) (NMU) A release of a Debian package by someone other than its usual maintainer. E.g. "The bug was fixed in a recent NMU."
- nonrestrictive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
- northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
- nothing in particular — not anything specific
- nuclear cross section — cross section (def 7).
- nuclear power station — a station or plant where nuclear energy is converted into heat, electricity, etc
- oblique circular cone — a cone whose surface is generated by lines joining a fixed point to the points of a circle, the fixed point lying on a line that is not perpendicular to the circle at its center.
- oil-in-water emulsion — An oil-in-water emulsion is a mixture in which an oily medicine is dispersed in water or other liquid.